>>Just guessing - but what is the total length of the full path to the file. Could that exceed 260 ?
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>It gives 82 characters from the path + 160 at the file name. Up to that, it works. This is a total of 242. However, from the application, it is run under a share name. And, in that situation, yes, it would then fall over 260. So, that explains.
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>But, I found that weird that once a hook as been establish to the file object that it will not run because of the path.
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>Thanks

Interesting. And there's a way this can happen even without the share name: Although the OS won't let you copy a file into a folder if the combined length is too long there's nothing to prevent someone extending the length of the folder name *after* the file has been added.....

And you were right - the FileInfo returned for such a file is odd.
Length, as you found, throws a FileNotFound exception.
Name seems to work.
LastAccessTime doesn't throw an exception - but seems to return garbage....

Also, FWIW trying to open such an 'overlength' file in Notepad, for example, gives 'Access is denied'